A persistent cough or sore throat may be a sign of a serious condition. If cough persists for more than 1 week, tends to recur, or is accompanied by fever, rash or persistent headache, or if sore throat is severe, persistent or accompanied by high fever, headache, nausea, and vomiting, consult a doctor. Do not take this product for sore throat lasting more than 2 days or persistent or chronic cough such as occurs with smoking, asthma, emphysema, or if cough is accompanied by excessive phlegm unless directed by a doctor. Keep this and all drugs out of the reach of children. Excess consumption may have a laxative effect.